DOI: 10.1016/j.quascirev.2017.11.005
Scopus记录号: 2-s2.0-85034423552
论文题名: The Island of Amsterdamøya: A key site for studying past climate in the Arctic Archipelago of Svalbard
作者: Bakke J. ; Balascio N. ; van der Bilt W.G.M. ; Bradley R. ; D' Andrea W.J. ; Gjerde M. ; Ólafsdóttir S. ; Røthe T. ; De Wet G.
刊名: Quaternary Science Reviews
ISSN: 2773791
出版年: 2018
卷: 183 起始页码: 157
结束页码: 163
语种: 英语
英文关键词: Arctic
; Continental biomarkers
; Glacier reconstruction
; Holocene
; Hydrogen isotopes
; Hydrology
; Lake sediments
; Paleoclimatology
; Svalbard
Scopus关键词: Hydrology
; Isotopes
; Lakes
; Sedimentology
; Stratigraphy
; Arctic
; Glacier reconstruction
; Holocenes
; Hydrogen isotope
; Lake sediments
; Paleoclimatology
; Svalbard
; Climate change
; alkenone
; biomarker
; cooling
; Holocene
; hydrogen isotope
; hydrology
; lacustrine deposit
; magnetic field
; paleoclimate
; paleotopography
; Amsterdam [North Holland]
; Arctic
; Arctic
; Atlantic Ocean
; Canada
; Canadian Arctic
; Netherlands
; North Holland
; Svalbard
; Svalbard and Jan Mayen
英文摘要: This paper introduces a series of articles assembled in a special issue that explore Holocene climate evolution, as recorded in lakes on the Island of Amsterdamøya on the westernmost fringe of the Arctic Svalbard archipelago. Due to its location near the interface of oceanic and atmospheric systems sourced from Arctic and Atlantic regions, Amsterdamøya is a key site for recording the terrestrial response to marine and atmospheric changes. We employed multi-proxy approaches on lake sediments, integrating physical, biogeochemical, and isotopic analyses to infer past changes in temperature, precipitation, and glacier activity. The results comprise a series of quantitative Holocene-length paleoclimate reconstructions that reveal different aspects of past climate change. Each of the four papers addresses various facets of the Holocene climate history of north-western Svalbard, including a reconstruction of the Annabreen glacier based on the sedimentology of the distal glacier-fed lake Gjøavatnet, a reconstruction of changing hydrologic conditions based on sedimentology and stratigraphy in Lake Hakluytvatnet, reconstruction of summer temperature based on alkenone paleothermometry from lakes Hakluytvatnet and Hajeren, and a hydrogen isotope-based hydrological reconstruction from lake Hakluytvatnet. We also present high-resolution paleomagnetic secular variation data from the same lake, which document important regional magnetic field variations and demonstrate the potential for use in synchronizing Holocene sedimentary records in the Arctic. The paleoclimate picture that emerges is one of early Holocene warmth from ca. 10.5 ka BP interrupted by transient cooling ca. 10-8ka BP, and followed by cooling that mostly manifested as two stepwise events ca. 7 and 4 ka BP. The past 4ka were characterized by dynamic glaciers and summer temperature fluctuations decoupled from the declining summer insolation. © 2017 Elsevier Ltd Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/112287
Appears in Collections: 气候减缓与适应
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作者单位: Department of Earth Science and Bjerknes Centre for Climate Research, University of Bergen, Allègaten 41, Bergen, 5007, Norway; Department of Geology, College of William & Mary, Williamsburg, VA 23187, United States; Climate System Research Center, Department of Geosciences, University of Massachusetts, Amherst, MA 01003, United States; Lamont-Doherty Earth Observatory, Columbia University, Palisades, NY 10964, United States
Recommended Citation:
Bakke J.,Balascio N.,van der Bilt W.G.M.,et al. The Island of Amsterdamøya: A key site for studying past climate in the Arctic Archipelago of Svalbard[J]. Quaternary Science Reviews,2018-01-01,183